Pipe-casing



(No Model.)

A. 8v E. L. WYGKOPF. PIPE GASING.

N0. 438,516. Patented Oct. 14, 1890.

UNITED STATES PATENT Fries.

ARCALOUS VYCKOFF AND ERNEST L. VVYOKOFF, OF ELMIRA, NEW YORK.

PlPE-cAslNe.

SPECIFICATION forming part of Letters Patent No. 438,516, dated October 14, 1890.

Application tiled February 27, 1890. Serial No. 341,961. (No model.) i

To @ZZ whom it may concern:

Be it known that we, ARcALoUs WYCKOFF and ERNEST L. WYCKOFF, citizens of the United States, residing at Elmira, Ohemung county, State of New York, have invented certain new and useful Improvements in Pipe- Casings, of which the following is a specification.

In laying the underground pipes of large steam plants it has been found essential to surround the pipes with a casing or coating which is a non-conductor of heat-as, for instance, with such a casing as is set forth in Letters Patent granted to us August. 20, 1889, No. 409,265. In such systems, however, it is essential to make provision at different points" for the expansion and contraction of the steampipes, for which purpose expansion-joints or variators are provided at such points, and it has been usual heretofore to extend the pipecasings as far as the variators and to inclose the latter in chambers, the walls of which are built up of brick. lhis arrangement has resulted in a great loss of heat and corresponding waste of fuel and a serious diminution of pressure in some cases from the rapid condensation of t-he steam at the various joints. To obviate these objections we combine with the casing and with the variator a box of nonconducting material, which constitutes, substantially, a prolongation of the casin g, so constructed as to receive the variator, and so as to be readily applied thereto, permitting ready access, and so as to effectually prevent the radiation of heat and the ingress of moisture. In the accompanying drawings, Figure lis a longitudinal sectional view illustrating a part of a line of steam-pipe, the variation, pipecasings, and variator-box. Fig. 2 is a section on the line 2 2, Eig. l.

' The sections A B of the steam-pipe are coupled, as usual, by the coupling or variator O, which permits the desired expansion and contraction, and which may be of any of the usual or approved constructions. Each pipe- Section is surrounded by a non-conducting casing D of suitable construction-such, for instance, as shown in our patent, No. 409,265, and illustrated in the Fig. l of the drawingsthe casing consisting of two wooden shells ct b,

able non-conducting material, which extends j upon all sides of the casing around the inner shell and within the outer shell, so as to constitute a practically unbroken envelope, which, although of thin friable material, is strengthened in position by the inner and outer shells in which it is applied, and which inl connection therewith effectually excludes the moisture and prevents the radiation of heat. By this means the variators are maintained at about the same degree of heat as the pipes, and condensation of lost heat is avoided.

In the construction shown each end of the box E is recessed to receive the projecting end of the inner shell c of the pipe-casing D,

so that the end of the shell b can abut against v the end of the box, forming a close joint, and intimate between the box and the tight joint. One side of the box, that which is most accessible, is made removable in order to facilitate access to the interior, and for such purpose the outer end and side pieces 2 3 of the outer shell extend beyond the inner end and side pieces 1 4 of the inner shell, so that the inner piece 5 of the detachable top or side will rest upon the edges of the inner pieces l and e and within the projecting pieces 2 and 3, while the outer piece 6 of the top will rest upon the edges of the pieces 2 and 3, and with the intervening paper or other envelope will overlap the joint between the pieces 5, 2, and 3 so as to eifectually close the joint at all points. The pieces 5 and 6 are preferably connected together, and are secured to the other sections of the box by screws 8, as shown.

It will be evident that the construction of the box as regards its forms and proportions will vary under different circumstances.V

Without limit-ing ourselves to the precise construction and arrangement of parts shown, we claim- The combination, with the steam-pipes, variator, and pipe-casing, of a box inclosing the IOO Variator consisting of an inner and au outer In testimony whereof we have signed our shell, one side of which is connected detaehnaines to this specification in the presence of 1o ably to the other portion of the box7 the intwo subscribing witnesses.

nel' section of seid side extending over the A. WYOKOFF.

5 'edges of l[he inner shell of the box and the ERNEST L. WVYCKOFF.

outer section and intervenngsheet of said side Witnesses: extending over the edge of the outer shell FRED. L. WOODRUFF,

and box, substantially is set forth. FRANK E. D. WATERS. 

